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    Michael Ermann

    Where does the vapor barrier go?

    Water moves through the enclosure in three different modes: as rain, as humidity coupled with air through enclosure air leaks, and as vapor that moves slowly through the molecules of the solid building material. Keep these three modes separate in your mind; people often confuse the last two.

    Vapor control - Moisture moves (slowly) through many building materials at the molecular level. Old thinking (and the A.R.E. thinking still, sometimes): block all vapor from entering assemblies. Correct thinking: throttle vapor so that it doesn’t diffuse into assemblies in abundance, but allow vapor migration when it helps dry out a waterlogged assembly. Avoid designing two vapor-impermeable layers inside the same assembly because that traps water (rain control layers that seal, such as membranes and fluid-applied rain barriers, are also vapor impermeable). Warm air holds moisture that will condense when it hits a cold surface it can’t move through, so if the climate is clearly always hot or always cold, take the easy win and place the vapor control layer close to the insulation, on the warm side of the insulation. --Michael Ermann

    You'll want to go here.

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    Leah Underwood

    This exam was designed to be failed. The CEO of NCARB is also the CEO of LineUp- the tech company that has seen exams crash for over a year and done nothing about it. There are a few people on both boards. They have to disclose their nonprofit salaries, but not their for profit salaries. Michael makes 450k ALONE from NCARB.

    So sure! Read the posts above. Do everything you're supposed to do but also realize that your failure is Michael Armstrong and senior staff's success. So they don't want you to pass.

    They have now decided to take your hands away too because that's more profit for them. You are not allowed scratch paper and pen for "security reasons" but in actuality using a mouse and a whiteboard to fail gives them two revenue streams off of your failure than a pen and paper so the pen and paper had to go.

    Sign the petition. Contact your local AIA. This deserves real consequences. There should never be a THOUGHT to taking a person's hands away from them- especially an architect

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